HC3 SIMILARITY FORECAST - Radiation values for tomorrow

This method explores the HelioClim-3 database to find for similar meteorological events in the past in order to make an estimation of the next day irradiation values.

Operational since July 2015

Time steps: 1, 5, 10, 15, 30 minutes, hourly and daily

Database: HelioClim-3v4 radiation values provided at d+1.

Spatial coverage: Meteosat Second Generation (-66° to +66° both in latitude and longitude)

Data availability: Please note that the day d should be over to provide the value for d+1. If a request is launched during day which is running, the service of persistence is applied to complete day d values, and use the solar forecast similarity method to generate day d+1 values. As a consequence, as soon as a new 15 min image is collected, this service provides different values for day d+1.

NB: the version 5 can not be available in real time since the input data are only available at d-2.